@article{MAN_1980__251_163441,
     author = {Martin Scharlemann},
     title = {The {Subgroup} of ...2 {Generated} by {Automorphisms} of  {Tori.}},
     journal = {Mathematische Annalen},
     pages = {263--268},
     publisher = {mathdoc},
     volume = {251},
     year = {1980},
     zbl = {0424.57022},
     url = {http://geodesic.mathdoc.fr/item/MAN_1980__251_163441/}
}